Learn to find a balance between drive and caution. Hone your ability to assess the risks involved in opportunities that come your way, and then ask yourself how much you want the reward. No pleasure comes without some risk, but not every reward is worth it. Save your time and energy for what matters most to you.
Socializing with large groups provides a soundboard for ideas, and helps to ground people in reality. A personal opinion or two may be the cause of some distress, but with a large forum of people you hear a multiple of perspectives. Then you can objectively weigh more possibilities than you could if you just hear your own voice, or that of one or two friends or critics.
Are you a positive or negative thinker? Listen to your inner voice for the answer. If you constantly focus on the negative, then you could be sabotaging the outcome of a goal you wish to reach. Listen to the positive voice that tells you you can do something, and ignore the negative voice that says you can't.